A SOLUTION OF PIPING SYSTEM - INTERNATION PROJECT MANAGEMENT AND PROCUREMENT SERVICE.
Reference Standards
ASME B16.9 Factory-Made Wrought Steel Buttwelding Fittings
ASME B16.28 Wrought Steel Buttwelding Short Radius Elbows and Returns
ASME B16.25 Buttwelding Ends
MSS SP-43 Wrought Stainless Steel Butt-Welding Fittings
MSS SP-75 High-Test, Wrought, Butt-Welding Fittings
ASTM A234 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature
ASTM A860 Wrought High-Strength Low-Alloy Steel Butt-Welding Fittings
ASTM A420 Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
ASTM A403 Wrought Austenitic Stainless Steel Piping Fittings
ASTM A960 Common Requirements for Wrought Steel Piping Fittings

EN 10253 - Butt-welding Pipe Fittings
 Part 1: Wrought carbon steel for general use and without specific inspection requirements
 Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
 Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
 Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements

DIN 2605-1 Steel butt-welding pipe fittings:Elbows and bends with reduced pressure factor
DIN 2605-2 Steel butt-welding pipe fittings:Elbows and bends for use at full service pressure
DIN 2615-1 Steel butt-welding pipe fittings:Tees with reduced pressure factor
DIN 2615-2 Steel butt-welding pipe fittings:Tees for use at full service pressure
DIN 2616-1 Steel butt-welding pipe fittings:Eccentric Reducers with reduced pressure factor
DIN 2616-2 Steel butt-welding pipe Reducers for use at full service pressure

GB/T12459 Steel butt-welding Seamless Pipe fittings
GB/T13401 Steel plate butt-welding pipe fittings
SH3408 Steel butt-welding seamless fittings
SH3409 Steel plate butt-welding fittings
SY/T0609 Specification for high test wrought butt welding fittings (MSS SP 75,MOD)

BW Fittings BW Fitting
1. Elbow 90° long radius
2. Elbow 45°
3. Elbow 90° short radius
4. Elbow 180° long radius
5. Elbow 180° short radius
6. Tee straight
7. Tee Reducing
8. Reducer concentric
9. Reducer eccentric
10. End cap
11. Lap joint Stub End